// 让菜单同时显示图标和文字
@Override
public boolean onMenuOpened(int featureId, Menu menu) {
  if (menu != null) {
    if (menu.getClass().getSimpleName().equalsIgnoreCase("MenuBuilder")) {
      try {
        Method method = menu.getClass().getDeclaredMethod("setOptionalIconsVisible", Boolean.TYPE);
        method.setAccessible(true);
        method.invoke(menu, true);
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }
  return super.onMenuOpened(featureId, menu);
}

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:app="http://schemas.android.com/apk/res-auto"
   xmlns:tools="http://schemas.android.com/tools">
  <item
    android:id="@+id/menu_search"
    android:orderInCategory="100"
    android:title="搜索"
    app:actionViewClass="android.support.v7.widget.SearchView"
    app:showAsAction="always"
    />
  <item
    android:id="@+id/scan_local_music"
    android:icon="@mipmap/lv"
    android:orderInCategory="100"
    android:title="扫描本地音乐"
    app:showAsAction="never"
    />
  <item
    android:id="@+id/select_sort_way"
    android:icon="@mipmap/lt"
    android:orderInCategory="100"
    android:title="选择排序方式"
    app:showAsAction="never"
    />
  <item
    android:id="@+id/get_cover_lyrics"
    android:icon="@mipmap/lq"
    android:orderInCategory="100"
    android:title="获取封面歌词"
    app:showAsAction="never"
    />
  <item
    android:id="@+id/imporve_tone_quality"
    android:icon="@mipmap/lw"
    android:orderInCategory="100"
    android:title="升级音质"
    app:showAsAction="never"
    />
</menu>